A

access control list (ACL)

A list of security protections that applies to either an entire object, a set of the object’s properties, or an individual property of an object.

ACL

See definition for: access control list (ACL)

Advanced Systems Format (ASF)

An extensible container format designed to store synchronized multimedia data.

analog

The traditional format in which audio and video are transmitted by using a wave or analog signal. An analog signal may not work with digital speakers; computers use digital signals.

announcement

A Windows Media metafile that gives a player the information needed to receive content. Announcement files contain Extensible Markup Language (XML) scripts.

aspect ratio

The ratio of the width of an image to its height.

attribute

A name-value data pair.

Audio Video Interleaved (AVI)

A multimedia file format for storing sound and moving pictures in Resource Interchange File Format (RIFF).

authentication

The process of verifying that an entity or object is who or what it claims to be. For example, a user name and password may be used to authenticate a user. See also: authorization

authorization

The process of granting access to protected resources. See also: authentication

AVI

See definition for: Audio Video Interleaved (AVI)